This VL1M-F18-05NC-2LM12 is an inductive proximity sensor with a M18 full stainless steel body with a Flush mounting design. It has a full stainless steel body length of 79 mm and is 2 Wire-NC, with a sensing distance of 5 mm and an M12 , 4 pin, male connector. It has a power supply of 10-60 VDC and protection rating of IP67. This highly durable sensor is perfect for Industrial Automation applications.